import 'dart:convert';
import 'dart:io';

import 'package:flutter_test/flutter_test.dart';

void main() {
  final manifest = File('android/app/src/main/AndroidManifest.xml');
  final matrix = File('tool/android_permissions.json');

  test('every Android manifest permission is present in the policy matrix', () {
    final declared = RegExp(r'<uses-permission\s+android:name="([^"]+)"')
        .allMatches(manifest.readAsStringSync())
        .map((match) => match.group(1)!)
        .toSet();
    final entries = (jsonDecode(matrix.readAsStringSync()) as List)
        .cast<Map<String, dynamic>>();
    final documented = entries
        .map((entry) => entry['permission'] as String)
        .toSet();

    expect(entries.length, documented.length);
    expect(documented, declared);
    for (final entry in entries) {
      expect((entry['owner'] as String).trim(), isNotEmpty);
      expect((entry['feature'] as String).trim(), isNotEmpty);
      expect((entry['trigger'] as String).trim(), isNotEmpty);
    }
  });

  test('runtime-sensitive permissions require a user action', () {
    final entries = (jsonDecode(matrix.readAsStringSync()) as List)
        .cast<Map<String, dynamic>>();
    final byPermission = {
      for (final entry in entries) entry['permission'] as String: entry,
    };
    final sensitive = {
      'android.permission.REQUEST_INSTALL_PACKAGES',
      'android.permission.CAMERA',
      'android.permission.ACCESS_FINE_LOCATION',
      'android.permission.ACCESS_COARSE_LOCATION',
      'android.permission.RECORD_AUDIO',
      'android.permission.BLUETOOTH_CONNECT',
      'android.permission.BLUETOOTH_ADVERTISE',
      'android.permission.BLUETOOTH_SCAN',
      'android.permission.POST_NOTIFICATIONS',
      'android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS',
      'android.permission.USE_FULL_SCREEN_INTENT',
      'android.permission.READ_EXTERNAL_STORAGE',
      'android.permission.READ_MEDIA_IMAGES',
      'android.permission.READ_MEDIA_VIDEO',
      'android.permission.READ_MEDIA_VISUAL_USER_SELECTED',
      'android.permission.READ_CONTACTS',
    };

    for (final permission in sensitive) {
      expect(byPermission[permission]?['trigger'], 'user_action');
    }
  });

  test('startup paths do not request notification or full-screen access', () {
    final pushSource = File(
      'lib/core/push/push_service.dart',
    ).readAsStringSync();
    final mainSource = File('lib/main.dart').readAsStringSync();

    final initBody = RegExp(
      r'Future<void> init\([\s\S]*?Future<bool> requestPermissionFromUser',
    ).firstMatch(pushSource)?.group(0);
    expect(initBody, isNotNull);
    expect(initBody, isNot(contains('requestPermission()')));
    expect(mainSource, isNot(contains('_ensureFullScreenIntentPermission')));
  });
}